10
-11 6 11 -4
-10 -6 14 8
-9 14 -9 20
-9 8 -18 -11
7 -9 -2 16
-8 -13 -1 12
17 19 5 -1
16 -13 -13 8
-5 -19 16 -15
3 18 -15 7